CN101121434A - Electrically assisted bicycle - Google Patents

Electrically assisted bicycle Download PDF

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Publication number
CN101121434A
CN101121434A CNA2007101410130A CN200710141013A CN101121434A CN 101121434 A CN101121434 A CN 101121434A CN A2007101410130 A CNA2007101410130 A CN A2007101410130A CN 200710141013 A CN200710141013 A CN 200710141013A CN 101121434 A CN101121434 A CN 101121434A
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CN
China
Prior art keywords
speed
driving mechanism
revolution
electrically assisted
assisted bicycle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CNA2007101410130A
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Chinese (zh)
Inventor
田中建明
岛津将博
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Electric Co Ltd
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Sanyo Electric Co Ltd
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Filing date
Publication date
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Publication of CN101121434A publication Critical patent/CN101121434A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
    • B62M6/40—Rider propelled cycles with auxiliary electric motor
    • B62M6/45—Control or actuating devices therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • B60L15/2009—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for braking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/20—Electric propulsion with power supplied within the vehicle using propulsion power generated by humans or animals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/52—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells characterised by DC-motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/66—Arrangements of batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L7/00—Electrodynamic brake systems for vehicles in general
    • B60L7/10—Dynamic electric regenerative braking
    • B60L7/12—Dynamic electric regenerative braking for vehicles propelled by dc motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L7/00—Electrodynamic brake systems for vehicles in general
    • B60L7/24—Electrodynamic brake systems for vehicles in general with additional mechanical or electromagnetic braking
    • B60L7/26—Controlling the braking effect
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2200/00—Type of vehicles
    • B60L2200/12—Bikes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2220/00—Electrical machine types; Structures or applications thereof
    • B60L2220/40—Electrical machine applications
    • B60L2220/44—Wheel Hub motors, i.e. integrated in the wheel hub
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/10—Vehicle control parameters
    • B60L2240/12—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/42—Drive Train control parameters related to electric machines
    • B60L2240/423—Torque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2250/00—Driver interactions
    • B60L2250/24—Driver interactions by lever actuation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2250/00—Driver interactions
    • B60L2250/26—Driver interactions by pedal actuation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention provides an electrically assisted bicycle having a simplified construction for reliably effecting a change-over to regenerative generation of power. The bicycle comprises a human power drive mechanism using a human drive force, and an electric drive mechanism adapted to receive power supplied from a battery 13 for driving a motor 32 with a drive force in accordance with a value detected by a torque detector 41 for detecting human torque of the human power drive mechanism. Electric power is produced by regenerative generation when cranks 6 of the human power drive mechanism are rotated with a number of revolutions smaller than is needed for causing the bicycle to run on a level road at a speed detected by a speed detector 40.

Description

Electrically assisted bicycle
Technical field
The present invention relates to have the man power driving mechanism that utilizes the manpower propulsive effort and come the electrically assisted bicycle of the electric driving mechanism of driving motor with the propulsive effort of the manpower torque of corresponding human power drive mechanism.
Background technology
In the prior art, as this electrically assisted bicycle, for example the someone has proposed following proposal: when descending etc., detect the situation of braking taked, make electrical motor produce braking force (patent documentation 1: Japanese Patent discloses flat 4-100790 communique).
The electrically assisted bicycle of this patent documentation 1 only makes electrical motor produce braking force at glancing impact, till will braking, can not make electrical motor produce braking force, electrical motor can not be placed reproduced state.
Therefore, someone has proposed following proposal: the legpower that detects the speed of a motor vehicle and stretcher, at legpower for the speed of a motor vehicle hour, judge and just on the downhill path, travel, and motor control is become reproduced state, the electrically assisted bicycle that charges the battery (patent documentation 2: Japanese Patent discloses flat 9-267790 communique).
In the electrically assisted bicycle of above-mentioned patent documentation 2, adopt the legpower of obtaining stretcher required when on level road, travelling in advance, as regeneration decision content storage, the legpower of the reality in certain speed of a motor vehicle switches to electrical motor the structure of reproduced state during less than the regeneration decision content with legpower.
, after the regeneration decision content of obtaining the various speed of a motor vehicle is stored, just exist the control complicated problems.In addition, when cyclist's body weight was light, even travel on level road, the legpower of the stretcher of the reality in certain speed had also switched to reproduced state with electrical motor during less than the regeneration decision content.Otherwise when the lift-launch weight travelled, even travel on the downhill path, the legpower of the stretcher of the reality in certain speed can even electrical motor should be switched to reproduced state, not fail to switch to reproduced state less than the regeneration decision content yet yet.And so on, exist to the crackpot problem of the switching of reproduced state.
Summary of the invention
The present invention develops at above-mentioned situation, and its purpose is to provide and can carries out the electrically assisted bicycle to the switching of reproduced state conscientiously with simple structure.
In order to solve above-mentioned problem, electrically assisted bicycle of the present invention, it is characterized in that: (this electric driving mechanism receives from the electric power of battery and supplies with to possess the man power driving mechanism that utilizes the manpower propulsive effort and electric driving mechanism, with detecting the cooresponding drive force electrical motor of torque value of the manpower torque of man power driving mechanism) with the torque detecting means, also possesses control unit, this control unit is that specified value is when following at the revolution of the crank of described man power driving mechanism, in electric driving mechanism, carry out regenerative electric power, to battery charge.
In fact the specified value of the revolution of crank can be set at zero.
In addition, the speed detecting means can also be set, this speed detecting means detects the moving velocity of bicycle; With the specified value of the revolution of crank, set the low revolution of revolution that becomes the crank of measuring than speed detecting means when walking on the level road.
Control unit is preferably controlled the renewable hair electric weight, so that the variable quantity of the speed of a motor vehicle is become below the specified value.
Control unit preferably carries out following control: the variable quantity of the speed of a motor vehicle is big more, just makes the renewable hair electric weight many more.
Control unit is preferably in the speed of a motor vehicle becomes certain speed when above, carries out regenerative electric power.
Preferably also have angle and detect the unit, this angle detects the angle that the unit detects the ramp; Control unit detects the angle that the unit detects according to angle, carries out regenerative electric power.
Preferably also have weight and detect the unit, this weight detects the unit and detects lift-launch weight; Control unit detects the output of unit according to weight, carries out regenerative electric power.
After adopting the present invention, because, judge at the descent run state according to the revolution of crank, thus can be irrelevant with cyclist's body weight and carrying object etc., the descent run state that judges rightly more carries out regenerative electric power, charges the battery.Like this, can obtain to keep comfortable walking performance, can also reduce the charging times of battery, prolong the effects such as travel distance after at every turn charging.
Description of drawings
Fig. 1 is the frame circuit diagram of expression one embodiment of the present invention.
The diagram of circuit of Fig. 2 one embodiment of the present invention.
Fig. 3 is the lateral plan of the electrically assisted bicycle of expression one embodiment of the present invention.
Fig. 4 is the section-drawing of the travel driving unit of expression one embodiment of the present invention.
But Fig. 5 is the section-drawing of the cam fitting portion of expression stator of one embodiment of the present invention and rotating ring.
The specific embodiment
Below, with reference to Fig. 1～Fig. 5, tell about embodiments of the present invention in detail.
At first, according to Fig. 3, tell about the integral structure of electrically assisted bicycle.
The 1st, vehicle frame is connected with the seat pipe 4 that fore front tube 2 is set and is arranged on the below of saddle 3, at a connecting portion that connects vehicle frame 1 and seat pipe 4, crank 6 that stretcher 5 has been installed and the travel driving unit 7 that rotates under these crank 6 effects is installed.
8 are mounted in the handlebar of the upper end of described front tube 2, and 9 are mounted in the front vehicle wheel of the lower end of described front tube 2, have the wheel hub 10 of not shown built-in motor, and under the effect of described electrical motor, front vehicle wheel 9 is driven in rotation, and constitute electric driving mechanism.
The 11st, rear wheel, between rear wheel 11 and described travel driving unit 7, the sprocket wheel (not shown) that sets up chain 12 is being set, do media by chain 12, the user is trampled the power of described stretcher 5, pass to sprocket wheel from travel driving unit 7, thereby constitute the man power driving mechanism that makes rear wheel 11 rotations.
The 13rd, battery, loading and unloading are configured between described vehicle frame 1 and the rear wheel 11 freely; The 14th, control capsule is arranged on the connecting portion of described vehicle frame 1 and seat pipe 4, the built-in control circuit that becomes control unit, according to the instruction of this control circuit, from battery 13 to the electrical motor supply capability, thereby driving motor.
In following telling about, so-called " positive veer ", be for make before the electrically assisted bicycle so that trample stretcher 5 when hand of rotation; So-called " reverse directions " is for " positive veer ", hand of rotation in the opposite direction.
Fig. 4 is the section of the described travel driving unit 7 of formation on the crank shaft 15 of the crank 6 that depresses stretcher 5 back rotations.Travel driving unit 7 is by following component set-up: swivel 16; Sprocket wheel 18, this sprocket wheel 18 are under the effect of stage clip 17, and the application force to these swivel 16 additional reverse directions trend rotates along with the rotation of swivel 16, does media by chain 12, make rear wheel 11 rotations; Moment detects unit 19, and this moment detects the skew of unit 19 according to the phase place of swivel 16 and sprocket wheel 18, detects moment of rotation; Shell 20, this shell 20 can dispose with swivel 16 one rotatably across sprocket wheel 18.
Swivel 16 ring-types form, and centre hole forms inner edge 21.Gear 22 engagements on the end of inner edge 21 and crank shaft 15 1 sides that are installed in crank 6, crank shaft 15 and the rotation of swivel 16 one.
Sprocket wheel 18, for crank shaft 15, by installing component 24 screw retention of supporting freely by bearing 23 rotations, the sprocket wheel portion of side face, side-prominent from swivel 16 to periphery.
Moment detects unit 19, by following component set-up: the stator 25 of ring-type, this stator 25 is fixing by described installing component 24; But rotating ring 26, but should rotating ring 26 be embedded in the outside of said stator 25, under the effect of the phase deviation of described swivel 16 and sprocket wheel 18, can moving axially towards crank shaft 15; Sensor 27, but this sensor 27 detects the axial internal clearance of this rotating ring 26, sends signal to control circuit.
But described rotating ring 26 can be used the metal manufacturing, for example can utilize aluminum or aluminum alloy to form.But described rotating ring 26 under the effect of spring 28, is pulled to a side of shell 20.As shown in Figure 5, but in described rotating ring 26, form protrusion 29, in this protrusion 29, form camming surface 30.In described stator 25, form protuberance 31, but camming surface 30 sliding block joints of this protuberance 31 and rotating ring 26 constitute cam part by described protrusion 29 and protuberance 31.As described later, after swivel 16 and sprocket wheel 18 produces phase deviations, but Yi Bian rotating ring 26 just make its camming surface 30 and stator 25 become protuberance 31 sliding block joints after rotate, Yi Bian moving axially towards crank shaft 15.
Described sensor 27, but in the shaft orientation moving range of rotating ring 26, but surround rotating ring 26 ground configuration winding around (not shown), but detect the variation that rotating ring 26 moves axially the impedance of back winding around.Described sensor 27, but the amount of the winding around of intrusion rotating ring 26 is big more, and the impedance of winding around is just big more.Control circuit detects the variation of this impedance, according to its control motor as a result.
Then, according to block scheme shown in Figure 1, tell about control circuit.
The 32nd, the electrical motor that the wheel hub of described front vehicle wheel 9 10 is built-in is done media by depositing circuit 33, by described battery 13 supply capabilities, utilizes this electric power to make front vehicle wheel 9 rotations; Perhaps utilize the rotary electrification of front vehicle wheel 9, do media, give battery 13 chargings by the described circuit 33 of depositing.Below, make the state of front vehicle wheel 9 rotations be called " non-reproduced state " electric power that utilizes battery 13 to supply with; The rotation that utilizes front vehicle wheel 9 is carried out being called " reproduced state " for battery 13 electrically-charged states behind the regenerative electric power.
The source switch that is provided with near 34 operating portions that are mounted in the described handlebar 8, the 35th, the mode initialization switch that is provided with on the described operating portion can be selected the some operation modes in " standard ", " saving automatically ".So-called " standard " pattern is the pattern of not carrying out regenerative electric power; And " saving automatically " pattern then is the pattern of carrying out regenerative electric power.Described operating portion, except source switch 34 and mode initialization switch 35, the some light switch 36 of lighting a lamp, the residual capacity of battery display part 37 that shows the surplus of battery 13 of controlling the bulb that becomes head lamp, the pattern display part 38 that shows the operation mode of selecting with described mode initialization switch 35 are being set also.
The 39th, the braking detecting means detects to behind the bicycle brake, and electrical motor 32 is placed " reproduced state ", gives battery 13 chargings.The 40th, the speed detecting means according to the rotative speed of described electrical motor 32, detects the moving velocity of bicycle.The 41st, the moment detecting means has described sensor 27, detect the variation of impedance of described winding around after, detect the pedal force that imposes on stretcher 5.The 42nd, the crankshaft speed detecting means according to the output wave shape of described sensor 27, detects the revolution of crank 6.
The 43rd, control setup, input is from the signal of described source switch 34, mode initialization switch 35, some light switch 36, braking detecting means 39, speed detecting means 40, moment detecting means 41 and crankshaft speed detecting means 42, the flickering of control charge-discharge circuit 33, bulb, residual capacity of battery display part 37 and pattern display part 38.
Then, the cyclist depresses stretcher 5, after beginning to travel, does media by crank 6, will rotate with stretcher 5 associated swiveies 16, but bigger resistance but acts on and does media and rear wheel 11 associated sprocket wheels 18 by chain 12.Therefore, swivel at first begins rotation, and between swivel 16 and sprocket wheel 18, stage clip 17 is compressed, and produces phase difference between swivel 16 and the sprocket wheel 18.
When the phase place of swivel 16 is more leading than sprocket wheel 18, but can with swivel 16 one rotation and can be to the axially movable rotating ring 26 of crank shaft 15, just make protuberance 31 sliding block joints of camming surface 30 and stator 25, and move to the direction of the winding around of invading sensor 27.After but rotating ring 26 was invaded, it is big that the impedance of winding around becomes.Torque detecting means 41 detects the variation of the impedance of winding around, and control setup 43 is according to this result, and the driving at control motor 32 after the stretcher legpower that manpower produces adds the auxiliary power of electrical motor 32, makes bicycle running.
Then, according to diagram of circuit shown in Figure 2, tell about the action of " saving automatically " pattern.At first, judge that operation mode is " saving automatically " pattern (step 1).When operation mode is not " automatically save " pattern (when being " standard " pattern), do not utilize regenerative electric power charge the battery (step 2).After selecting " saving automatically " pattern, judge crank 6 whether rotates below the regulation revolution, and bicycle is with (the step 3) of travelling of the speed more than the certain speed.
In the present embodiment, above-mentioned what is called " certain speed " is the speed that can be obtained enough electric energy generated by regeneration, specifically refers to 7km/h, with the specified value of the revolution of crank 6, set for than with low slightly any the revolution of the revolution of the crank 6 of this moving velocity when travelling on the level road.
The revolution of crank 6, with than with low slightly any the revolution slew mode of the revolution of the crank 6 of present moving velocity when travelling on the level road, do not depress the state that stretcher 5 also can travel or carry out braking mode even be judged as to use than depressing the state that fireballing speed that stretcher 5 travels travels, the state that promptly on the downhill path, travels etc.Like this, when this state, as telling about after the step 4, carry out regenerative electric power.Owing to judge the descent run state according to the revolution of crank, so irrelevant with cyclist's body weight, carrying object etc., compared with prior art, descent run state more can judge rightly.
In step 3, the speed of travel of bicycle be the revolution of the following or crank 6 of certain speed by being decided revolution when above, the step 2 of dividing a word with a hyphen at the end of a line is not carried out regenerative electric power.In step 3, the speed of travel of bicycle is more than the certain speed, and the revolution of crank 6 judges whether to carry out regenerative electric power (step 4) by being decided revolution when following.
In step 4, if do not carry out the state of regenerative electric power, the step 5 of just dividing a word with a hyphen at the end of a line is carried out regenerative electric power, to battery charge.In step 4, if carry out the state of regenerative electric power, the step 6 of just dividing a word with a hyphen at the end of a line judges whether to slow down.In step 6, if do not slow down, the step 7 of just dividing a word with a hyphen at the end of a line increases the renewable hair electric weight.The renewable hair electric weight can increase travel distance after increasing, and can also strengthen the braking amount simultaneously, thereby can suppress the increase of the speed in the descending, obtains safety and comfortable travelling.
In step 6, if slow down, the step 8 of just dividing a word with a hyphen at the end of a line is more than the minimum whether the judgement electric energy generated is stipulated.In step 8, the step 2 if electric energy generated less than minimum, is just divided a word with a hyphen at the end of a line stops regenerative electric power, further suppresses to slow down and reduces; If electric energy generated is more than the minimum, the step 9 of just dividing a word with a hyphen at the end of a line reduces the renewable hair electric weight.Judge and reduce the braking amount when utilizing the braking deceleration of regenerative electric power, obtain comfortable travelling thereby can press down.In addition, carry out glancing impact, preferentially utilize the regenerative electric power of brake operating, do not stop regenerative electric power according to diagram of circuit shown in Figure 2.
In addition, in the present embodiment, in step 3, judge that the speed of travel is a certain speed.But also can judge and whether quicken.
In addition, in step 3, set the specified value of the revolution of crank 6 for the low revolution of revolution than the crank 6 of the moving velocity that detects with the speed detecting means when travelling on the level road.But, also this specified value can be set for value zero or almost approaching and zero.When so-called crank 6 rotates hardly, be carry out glancing impact, when travelling etc. when on the downhill path, travelling or with the speed more than necessary.Like this, owing to adopt the almost non-rotary situation of crank 6 that detects (revolution is the following situation of specified value), thus irrespectively switch to the structure of regenerative electric power with moving velocity, thus control is further simplified.
In sum, can carry out regenerative electric power conscientiously, can also control electric energy generated according to walking states, thus can be when keeping comfortable travelling, also obtain to reduce battery charging times, prolong effect such as each electrically-charged operating range.
If those skilled in the art just obviously can carry out distortion of the present invention and change in the scope of spirit of the present invention, this distortion is included in the scope of the present invention of " claims " record.

Claims (6)

1. electrically assisted bicycle possesses:
Utilize the man power driving mechanism of manpower propulsive effort; With
Electric driving mechanism, this electric driving mechanism are obtained from the electric power of battery and are supplied with, and come driving motor with the propulsive effort of the torque value of the manpower torque of the corresponding man power driving mechanism that is detected by the torque detecting means, it is characterized in that:
Also possess control unit, this control unit is specified value when following at the revolution of the crank of described man power driving mechanism, carries out regenerative electric power in electric driving mechanism, to battery charge.
2. electrically assisted bicycle as claimed in claim 1 is characterized in that: the specified value of the revolution of the crank of so-called man power driving mechanism, and almost nil.
3. electrically assisted bicycle as claimed in claim 1 is characterized in that: the speed detecting means is set, and this speed detecting means detects moving velocity; With the specified value of the revolution of described crank, set the low revolution of revolution that becomes than the moving velocity crank when travelling on the level road that detects with described speed detecting means.
4. electrically assisted bicycle as claimed in claim 1 or 2 is characterized in that: described control unit, control renewable hair electric weight is so that become below the specified value variable quantity of the speed of a motor vehicle.
5. electrically assisted bicycle as claimed in claim 1 or 2 is characterized in that: described control unit carries out following control: the variable quantity of the speed of a motor vehicle is big more, just makes the renewable hair electric weight many more.
6. electrically assisted bicycle as claimed in claim 1 or 2 is characterized in that: described control unit, become certain speed when above in the speed of a motor vehicle, and carry out regenerative electric power.
CNA2007101410130A 2006-08-11 2007-08-13 Electrically assisted bicycle Pending CN101121434A (en)

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JP2006219237A JP2008044414A (en) 2006-08-11 2006-08-11 Electrically assisted bicycle
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ATE529324T1 (en) 2011-11-15
JP2008044414A (en) 2008-02-28

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